说明： 树洞外链允许你将文件存放在不同位置-本地服务器、远程服务器、七牛云存储、阿里云OSS、又拍云存储。你只需进行简单设置就能对接云存储服务。我们后续还将开发支持更多的存储方式。
多用户系统，用户可以注册账号管理查看已上传的文件，你也可以设置不同的用户组并通过出售用户组、邀请码获得额外收入。
多上传方案，你可以配置不同的上传方案并绑定至不同的用户组，实现不同用户组的文件以不同方式存储，或者不同用户组对文件有不同的限制。
树洞外链 是完全开源的。它的代码托管、开发、维护都依赖 GitHub 平台。(The tree chain allows you to store files in different locations - local servers, remote servers, seven cattle storage, Ali cloud OSS, and cloud storage. You can simply connect cloud storage services with simple settings. We will also develop more support for storage.
Multiuser systems, users can register account management to view the uploaded files, you can also set different user groups and get extra revenue by selling user groups and inviting codes.
Multiple upload schemes, you can configure different uploads and bind to different user groups to store files in different groups of users in different ways, or different user groups have different restrictions on the file.
The outer chain of the tree hole is completely open source. Its code hosting, development and maintenance rely on the GitHub platform.)